Air conditioning apparatus



Dec. 29, 1931. w JONES 1,838,684

AIR CONDIT I ONING APPARATUS Filed July 29. 1931 '0: *4- 2 v, gwwnto c hard/75 166,

Patented Dec. 29, 1931 PATENT OFFICE WARD M. JONES, OF DETROIT, MICHIGAN p are. CONDITIONING arrana'rus Application filed July 29, 1931. Serial 1T0. 553,839.

' The present invention relates to air-conditioning apparatus, and more particularly to a novel form of flue adapted to be associated with gas heater ranges and the like. One object of the present invention is the provision of improved means whereby the gases escaping from the flue of a gas range may be substantially freed from. such forei sub: stances as soot, grease and the like. other in object of the invention is to provide apparatus of the character designated containing a liquid purifying agent.

These and other objects of the invention will be apparent from the following specifica- 16 tion, wherein a preferred andillustrative embodiment of the invention has been selected, for the purposes of description.

' In the accompanying drawings:

Fig. 1 is a perspective view of a device an embodying the present invention,

Fig. 2 is a vertical sectional view taken on the line 2-'2 of Fig. 3, and r 3flis a similar view taken on the line 3--3 of Fig. 2. Referring to the preferred and illustrative embodiment of the invention as shown in Figs. 1, 2 and 3, it will be seen that a gasheated device 1, which may take the form of a gas range, is provided with an outlet flue opening 2, through which the smoke and fumes may pass. This outlet opening is conveniently connected directl with a flue 3 which has been shown as a s ort oval shaped stove pipe section of sheet metal removably mounted on the adjacent portion of the gas range.

In accordance with the present invention, the upper end of the flue 3 is closed by means of aremovable oval-shaped ca 4: having annular-shaped walls formed 0 porcelain or other suitable ceramic material which shall be resistant to heat as well as the corrosive effect of the flue gases. This cap is provided with a horizontal to wall 5 and an outer, depending wall 6. T e wall 6 extends down beyond the upper edge of the flue and snugly fits around an adjacent outer side portion 7 thereof.

The cap 4' is also provided with inwardly and downwardly sloping walls arranged to form an annular re-entrant portion 8 which extends down into the upper endof the flue and 18 provided with'a conical-like deflecting surface 9. 'The upper end of this surface merges into a curved, deflecting surface .10 on the under side, of the cap 4; These surfaces assist in the deflection of the flue gases backwardly toward the center of the flue and along the conical-like surface 9.

Positioned directly under the re-entrant portion 8 of the cap. 4, so as to receive the deflected gases, is a urifying chamber 11 which may take the orm of a.sheet metal cup. This cup preferably has a conicalside wall 12 to decrease the back pressure on the gases flowing upwardly in the flue, and a short bottom wall 13. The upper edge of.

the side wall 12 conveniently projects up above the lower portion of the conical deflecting surface 9 and is spaced therefrom to provide an annular passage 14 for the deflecting of gases into the cup 11. The cup may be secured in this position in any convenient -manner, as by ligating ppposite sides to the adjacent portions of theflu'e'" side walls as indicated by numerals 15 and 16 respectively. The rivet 16 having an open center to provide an over flow opening 17 as hereinafter described. i

It will be noted that the cup is so positioned that such foreign matter as is deposited on the conical surface 9 and the adjacent portion of the surface 10 moves by gravity into the cup 11, rather than back down the flue and into the gas range, thereby eliminating one sourceof disagreeable odors.

The purification of the flue gases is further assured by the provision of a purifying element in the cup 11. Preferably this takes the form of water. In this illustrated embodiment of my invention, I use a liquid purifying agent such as water. The gases flow alo the surface of the water 11 and thus any oreign matter is removed from the gases and deposited in the cup.

The invention futher contemplates means, whereby the purified gases maybe conveniently discharged from the purifying cup 11. To this end, the outlet is provided in the central part of the re-entrant portion of the 100 cap 4. This passage leads from the central open space at the top of the cup just above the surface of the water, to the upper side 5 of the cap 4. and atmosphere. Conveniently, the sides of this outlet are frusto-conical in shape or flared outwardly as shown in the drawings to provide a maximum surface for the condensation of vapors and for directing the flue gases and any condensate into the chamber or cup 11.

In practice, the cup 12 is filled with water through this funnel shaped passage without removing the cap 4. The proper amount of water may be gauged in anyconvenient manner, as by observing the same through the overflow opening 17 For simplicity in manufacture, this opening is forme by using a tubular rivet 16, when securing the cup 12 to the flue 3, as heretofore described and shown in the drawings. This gauge opening serves as an overflow opening, tending to prevent the water from overflowing from the cup down into the flue 3 and the gas range, should an excessive amount be supplied to the cup 11.

In operation, the gases flow from the oven 1 up the flue 3 as indicated by the arrows and are deflectedby the surfaces 9 and into the filtering cup 11. The foreign matter deposited at this time on the surfaces Q and 10 moves by gravity over these surfaces into the cup 11, where it is collected. The gases,

in passing further purified of grease, soot and other undesirable material, which also collects in the cup 11. At the same time, the gases are supplied with moisture from the water in the cup which further passing through the flue. The gases thus purified and humidified then escape to atmosphere and through the outlet passage in the top of the cap.' By thus providing the metallic flue pipe with a cap of porcelain material, any danger of the cap and the walls of the flue pipe becoming corroded together over the surface of the water, are

purifies them in may be raised to the position indicated by the line 13-13, Fig. 2. The gases now must pass through the water in the cup 11 before being discharged through the central outlet passage in the cap. Such change in the water level would, of course, necessitate a corresponding change in the position of the gauge opening 17.

While I have shown and described a liquid as the purifying and filter medium, it is obvious that the cup or receptacle 11 may be adapted to contain any other form of purifying material.

. What I claim is:

1. In an oval-shaped device of the character described, a flue, a circular shaped receptacle adapted to contain a purifying element positioned within said flue and rigidly secured to the side walls thereof, and means into said chamber, and an outlet for said chamber formed by the depending walls whereby the gases in said chamber may escape therefrom.

3. In'a device of the character described, a flue, a chamber located within said flue, a means for securing the top of said chamber walls and said flue walls together, said means having an opening extending from said chamber through said flue wall to the outside, and thereby providing a likuid level gauge for the chamber. P

4. In a device of the character described, a flue, a purifying cup adapted to contain a liquid, meansfonsecuring said cup and is eliminated 311d. theseparts may be readily said'fiue' together, said means having an "separated whenever it is necessary to clean the filter cup or otherwise inspect the flue for any reason.

The invention further contemplates a safety means for preventing the. accidental closure of the outlet from the cup as would occur, for example, by placing a book, pan or. other flat object over the same. 1 This safety means may conveniently take the form of a raised shoulder or rib 20, which projects above the upper side 5 of the cap 4 as illustrated inthe drawings. Thus, with this rib on the cap, it is impossible to accidently close the outlet opening of the passage by placing any flat object over the same. I Y

Theinvention maybe variously modified and embodied within the scope of the subjoined claims; for example, the water level opening 1 extending from' said chamber through said flue walls, a cap for said flue having a portion adapted to deflect the gases traversing said flue into said cup, said cup having an outlet opening for the purified gases, and a. protective rib on said cap positioned adjacent to said outlet opening and extending beyond the same.

5. As a new article of manufacture, a deflector cap for gas flues and the like, comprising annular top walls of ceramic material, said walls arranged to support the cap on the flue walls, a central outlethaving a flared opening formed by the inner portions of. said annular walls, and a projection formed in the top wall and at one side of the mg vapors traversing the flue and directing condensate and gases into a receptacle, and a central Outlet having a flared opening formed by said sloping walls.

7. As a new article of manufacture, a cap for a flue, comprising walls of ceramic material including a top wall and inner and outer depending sidewalls, said outer wall being adapted to engage the flue walls, said inner wall sloping inwardly and downwardly to 7 provide an inner surface for condensing va pors traversing the flue and directing condensate and gases into a receptacle,-a central outlet having a flared opening formed by said sloping walls, and a projection formed in the top wall and atone side of the outlet.

8. As a new article of manufacture, an air conditioning device for gas ranges and the like, comprising a flue adapted to be attached on the flue vent of a gas range, a

receptacle located withinthe flue and near" the top portion thereof, portions of the side walls of said receptacle being positioned adjacent to the inside walls of said flue and secured directly thereto, a closure cap for the flue, said cap having inside walls for engaging the top of said flue walls, and depending walls sloping inwardly from said inside Walls for deflecting gases and condensed vapors into said receptacle, and an outlet formed in the cap bythe lower portions of said depending walls.

9. As a new articleof manufacture, an oval-shaped flue, comprising a conical shaped receptacle located, within said flue and having-its top portion secured directly to the flue walls on the minor axis of said oval flue, and a closure cap for said flue having wall members sloping downwardly and inwardly from the top of said cap to form a central opening whereby gases traversing the flue are deflected into the receptacle and then discharged through'the opening.

- 10. In a device of the character described, an oval-shaped flue, a conical shaped receptacle located within said flue, the upper walls of said chamber forming a cylindrical top portion for said receptacle, the sides. of

c which engage the walls ofsaid flue on the minor axis thereof, and means for rigidily securing the engaging portions of said receptacle and flue walls together.

11. In a device of the character described, an oval-shaped flue, a conical shaped chamber located within said flue, the upper walls of said chamber engaging the walls of said flue on the minor axis thereof, means for rigidly securing the engaging portions of said chamber and flue 'walls 'togetl er, and an overflow opening extending through the walls of said flue and said chamber for conducting any excess liquid from the chamber.

12. In a device of the character described, the combination with a metallic flue vent of a gas range, of a cap for said flue comprising walls of ceramic material including a top wall and inner and outer depending side walls, said outer wall being adapted to engage the flue walls, said inner wall sloping inwardly and downwardly to provide an inner surface for condensing vapors-traversing the flue and directing the same into a receptacle, and central outlet having a flared opening formed by said sloping walls.

13. In a device of the character described, the combination with a metallic flue vent ofa gas range, of a cap for said flue comprising walls of ceramic material including a top wall and inner and outer depending side walls, said outer wall being adapted to engage the flue walls, said inner wall sloping inwardly and downwardly to provide an inner surface for condensing anddeflecting vapors traversing the flue, a central outlet having a flared opening formed by said sloping walls and a purifying means operatively associated with said opening for intercepting gases and Vapors escapingfrom said outlet.

In testimony whereof I aflix my signature. 1 WARD M. JONES. 

